Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
vanh tai » van tai, hanh tai, anh tai
tai cuu » tai cuc, tai buu, tai cua
va vanh » va van, va danh, va hanh
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
te sach » toc sach
cuu tre » cua tre, cau tren, cau treo
o lang » hoa lang, hoi lang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (te sach)) o lang xa hoi. hieu ve ((cham soc) or (cam xuc)) va vanh tai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (te sach)) o lang xa hoi. hieu ve ((cham soc) OR (cam xuc)) va vanh tai cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (te sach)) o lang xa hoi. hieu ve ((cham soc) or (cam xuc)) va vanh tai cuu tre*.